I don't know too much about composition but maybe you don't want those balloons to be in too much of a straight line. Seing how they are blown about by the wind and all you might want to move the bottom one a little bit in one direction. Maybe move it up a bit so that it looks like they are curving upwards. I hope you understand what I am saying

I don't know too much about composition but maybe you don't want those balloons to be in too much of a straight line. Seing how they are blown about by the wind and all you might want to move the bottom one a little bit in one direction. Maybe move it up a bit so that it looks like they are curving upwards. I hope you understand what I am saying